﻿using SharepointCompanion.Data;

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Sharepoint.Client;
using SharepointCompanion.Common;

// The Grid Application template is documented at http://go.microsoft.com/fwlink/?LinkId=234226

namespace SharepointCompanion
{
    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// An overview of the Grid Application design will be linked to in future revisions of
    /// this template.
    /// </summary>
    sealed partial class App : Application
    {
        Windows.Storage.ApplicationDataContainer localSettings =
            Windows.Storage.ApplicationData.Current.LocalSettings;

        SPConnection _spConnection;
        /// <summary>
        /// Initializes the singleton application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {
            this.InitializeComponent();
            this.Suspending += OnSuspending;
        }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used when the application is launched to open a specific file, to display
        /// search results, and so forth.
        /// </summary>
        /// <param name="args">Details about the launch request and process.</param>
        protected async override void OnLaunched(LaunchActivatedEventArgs args)
        {
            // TODO: Create a data model appropriate for your problem domain to replace the sample data

            // Do not repeat app initialization when already running, just ensure that
            // the window is active
            if (args.PreviousExecutionState == ApplicationExecutionState.Running)
            {
                Window.Current.Activate();
                return;
            }

            // Create a Frame to act as the navigation context and associate it with
            // a SuspensionManager key
            var rootFrame = new Frame();
            SuspensionManager.RegisterFrame(rootFrame, "AppFrame");

            if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
            {
                // Restore the saved session state only when appropriate
                await SuspensionManager.RestoreAsync();
            }

            if (rootFrame.Content == null)
            {
                // When the navigation stack isn't restored navigate to the first page,
                // configuring the new page by passing required information as a navigation
                // parameter
                if (!rootFrame.Navigate(typeof(GroupedItemsPage), "AllGroups"))
                {
                    throw new Exception("Failed to create initial page");
                }
            }

            // Place the frame in the current Window and ensure that it is active
            Window.Current.Content = rootFrame;
            Window.Current.Activate();

            Windows.Storage.ApplicationDataContainer container =
   localSettings.CreateContainer("cookieContainer", Windows.Storage.ApplicationDataCreateDisposition.Always);

            Uri uri = null;
            string cookieHeader = null;
            //if (localSettings.Containers.ContainsKey("cookieContainer"))
            if(container!=null)
            {
                if (container.Values.ContainsKey("uri"))
                {
                    uri = new Uri(container.Values["uri"].ToString());
                    if (container.Values.ContainsKey("cookies"))
                    {
                        cookieHeader =
                            container.Values["cookies"].ToString();
                    }
                }
            }

            if (cookieHeader != null)
            {
                try
                {
                    //a small bug: cookie header is retrieved with semicolon, setcookies wants a comma separator :(
                    cookieHeader = cookieHeader.Replace(';', ',');
                    _spConnection = new SPConnection(uri, cookieHeader);
                    var data = await _spConnection.RequestAsync();
                }
                catch
                {
                    //cookies not valid anymore
                    _spConnection = null;
                }
            }
        
            if(_spConnection==null)
            {
                var loginDialog = new SharepointLoginDialog();
                _spConnection = await loginDialog.ShowAsync();
                if (_spConnection != null)
                {
                    if (container!=null)
                    {
                        container.Values["uri"] = _spConnection.Site.ToString();
                        container.Values["cookies"] = _spConnection.CookieHeader;
                    }
                }
            }

            if (_spConnection != null)
            {
                try
                {
                    await SharepointDataSource.LoadDataAsync(_spConnection);
                }
                catch (Exception ex)
                {
                    System.Diagnostics.Debug.WriteLine("test");
                }

                //if (!rootFrame.Navigate(typeof(GroupedItemsPage), sampleData.ItemGroups))
                //{
                //    throw new Exception("Failed to create initial page");
                //}
            }

            // Delete a container

            //            localSettings.DeleteContainer("exampleContainer");
        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        async void OnSuspending(object sender, SuspendingEventArgs e)
        {
            var deferral = e.SuspendingOperation.GetDeferral();
            await SuspensionManager.SaveAsync();
            deferral.Complete();
        }
    }
}
